Find<Package>.cmake modules, as they were missing with set
CMAKE_DISABLE_<Package>=TRUE.

Now they are in speparte modules Add<Package>Flags and thus can be
used as exspected with disabled packages.

[[Imported from SVN: r7463]]

[[Imported from SVN: r7371]]

[[Imported from SVN: r7369]]

[[Imported from SVN: r6966]]

Added function to generate eps-files.

[[Imported from SVN: r6905]]

[[Imported from SVN: r6900]]

[[Imported from SVN: r6898]]